A portable application can be run from a removable drive (USB flash drive, iPod, portable hard drive, etc) on any Windows computer without installation.
You will carry the program with settings on removable drive and don't modify settings on host computer.
On Vista and above turn off User Account Control (UAC) or run launcher as admin.

It seems that the older executable for the portable packages used to be digitally signed, but for some reason, all the more recent packages aren't and I get the following UAC error message every time I launch the program.

"Do you want to allow the following program from an unknown publisher to make changes to your computer?"

I'm not sure what the procedure is for digitally signing an exe, but that something that you will be doing again in the future?

If you are talking about installer (not program itself) I think this comes from your download location that your computer consider as coming from Internet.I have same message when I run a setup downloaded in C:\downloads

Okay, maybe it's something on my machine, but there is definitely something different about the way you're creating the new launcher that causes Windows to question it every time it tries to launch. Because, I replaced the current launcher with the last good launcher (KMPlayer 3.3.0.33) and, for whatever reason, Windows does not ask for permission to launch. So I guess I'll just do that for any new update. Thanks for your packages.

hey. i just downloaded this now, the rewind key edit is not working. i can use mouse but when i set key edits rewind doesnt work im on windows 7, i have ver. kmplayer 3.2.0.19 its perfectly working. i would love to use the new update though. can u help? ty